Lubricator



May 21, 1935 J. 1 REILLY 2,001,746 LUBRiCAToR Filed Jan. 9, 1954 ffzii, 1536i. Zig.

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Patented May 21d, 1935 3" y i t 4 n y A A Applcation'eJanuary 9, 1934; 'Serial No. 705,909

"jeelaimsg (C1". "121`1 3) i VLThis invention relates'to lubricators, and vmore of the cylinder and the elements 5 and 5. `The 'particularly to lubricators particularly designed elements 5, 6 and 'I fare held inasse'mble'd 'relato'use in pressure `fluid actuated hammer` tools, tionwith respectftof the cylinder'in' any suitable such as plug drills or the like. manner. Formed inthe valve'chest member 6 A object of this invention 1s toprovide an 'is a'valve chamber 9 having reciprocablymount-4v 5 'improvedjlubricaton Another Objectis to proed therein-anautomatic fluid distributing valve jvldean' improved lubricatorV for ajpressure fluid I0 whicliis adapted toV controlthe now? ofpres-` motor whereby lubricant issupplied to the movsure uid' to 'and the exhaust from Ythe Vopposite l ing parts" of Vthe motor upon admission of presendsof "the motor cylinder, thereby to eiiectacf 10' surey'fluid' to the motor. `Another object islgto tuation of the hammer piston. Pressurenuid `10 provide an improved lubricatonespeciall'y de` isjsupplied to the valvev chamber throughauid signed-to use in hammer drilling tools, such as ,supply connection II secured to the head block plugfdrills. orfthe like. A further object is'to "I,- the pressure fluid flowing fromthis supplyconprovide an improved lubricator for a pressure nection through a transverse passage I2 and a r vriii fluid motor whereby the'r supplyof lubricant'to communicatinglongitudinal passage I2a," the 15 #the motoris controlledh by""`the motor throttle latter inlturn communicating with-the valve valve. VYetjanother'object is to` provide in a tool chamber 9j yThe vflow offpressurefluid to the `fofithev above character an improved lubricator passage l2a iscontro1led by a throttle valve I3 arra'n ged"` and controlled in a :novel manner arranged" inand having a Isliding t with an 'whereby when4 motive fluid issupplied to thetool axialfbore I4 inthe memberV "I, "and having `an 20 there is at the sanietimea Iiow` oflubricant to "intermediate groove #I5 which connects, when the moving" motor parts, the motive fluid and the-valve is 'initsforward position, thepassage lubricant flow both being controlled by the motor I2 with the passage I2a'.f The fmeans `for conthrottle' valve. @These vand othenobjects will, trolling thethrottle valve I3comprises a'sleevehowever. hereinaftermore'fmly appear. like Aportion ljrecip'rocably mounted on the cy- 25 In-thefaecoxnpanyingdrawing thereisshowm 4 lindrical portion of* the head"block 1 .and 4hav- `'for purposes of illustration, one form which the Ving" secured theretoy a drillfsupporting-member, invention may assume in practice.; herein a manual grasping handle I'l.y `'I'herear lslnthissdrawingend oi'theyalvel` I3 abuts at I8the inner wall `:l0 Lis `a `longitudinal section through a ofthe-sleeve portionl I6, and'isnormally urged 3o Lhammersdrilling tool equipped with the illustrain such abutting rpositionby `means ofi-pressure .tive'form of theimproveddubricator. fluidnsupplied Afrom, the .supply connection II Fig.. 2 is a; sectional view,` taken substantially through a passage I! communicating with-the on line 2--2 of Fig. 1, with the parts in a differvalvefbore .I4 atfthe lower end of the valve, the e ent positionl .pressure fluid `acting on the lower face of the 35 `yliig. 3 is a cross sectional view taken online valve to urge the same into its uppermost posi- `3---3 of Fig.-1.` c tion.` The supply connectionll projects through l `In this illustrative construction; theimproved a slot `2li lformedinthe sleeve portion I6 of the `lubricator is shown embodied in aV hand held, handle, and engagement of the inner end of this 40 `hammer drilling tool of theg type commonly` slot with theconnection II limits upward move- `'40 known as aplug drill, although it will be evident Ament of the .handle wthrespect to the motor that .the same may be embodied in tools of `various cylinder.. When thehandle I'Iis released by the Aother types. This drill herein comprises a cyloperator, Athe pressure fluid acting on the valve inder I having a bore 2 containinga reciprocable I3 shoves tlieparts rearwardly intothe .position hammer piston 3 adapted to deliver impact blows shown in FigQlZ, thereby cutting oliv communicaf 45 to the shank' 4 of awOrking implement suitably tion between the passages I2 and IZaand stopping mounted withinthe forward end of the tool. Sethe 'mot o r`. w When the operator shifts the handle cured to the rear end of `W the cylinder is a rear I'I inwardlytowardsthe drill cylinder', the throthead plate 5, while secured to the member.` 5 tle valve I3`i`s moved` intotheposition shown in 5 isa valve chest member 5. The rearportionof Fig. 1 to connect the 'passages I2 and I2, there- 50 A Vtheicylin'der and the elements 5 andf are eyby te start the motor, j

'lindrical inform; and arranged 4atthe krear of Nowwreferring to the improved lubricator, it 'the valve chest member e andabutting the rear will benut-ed that formeuin the rear n eaafblock "end thereof, is a rear 'head block "I Ihaving -a of "the motor `are parallel `lubricant chambers 4sleeve-"like porton't surrounding Vthe rearend lor reservoirs 2|', 2l, hereinf two innumbenalu though more or less may be provided, as desired. These chambers or reservoirs are in the form of bores arranged at diametrically opposite sides of and parallel with the throttle valve bore I 4, and are preferably of a length to extend substantially coextensive with the throttle valve bore, as shown in Fig. 2. These chambers communicate with the bore I4 of the throttle valve I3 through relatively restricted, forwardly inclined .passageways 22, 22, these passageways, when the valve is in its released or closed position shown in Fig. 2, communicating with the groove I5. The chambers 2l are lled with lubricant through passages 23, 23 communicating with the lubricant chambers 2|, 2I and having their outer lends closed by a detachable filler plug 24.` v"The sleeve' portion I6 of the handle is slotted at 25 to permit access to this filler plug. When thedrillis ,turned` onto its side and the ller plug 24 is removed, lubricant may be poured through the slot 25 and passages 23, 23 to the lubricant chambers, `the riiller plug thereafter beingplaced inposition.

inwardly on the handle Il, thereby shifting the throttle valve I3 downwardly into its open position shown in Fig. l, pressure fluid then flowing lfrom thesupply connection II through the passages I2 and I2a to the chamber of the automatic distributing Avalve I0. Simultaneously, the lubricant retained in the 'groove I5 in the throttle valve is discharged into the passages I2 and4 I2a and is entrained by the airflowing therethrough, andas a result, the lubricant is carried to the moving parts of the motor, namely the distributing valve or hammer piston, thereby to effectively lubricate the same. It Will thus be seen that each timethe hammer motor is started a small quantityv of lubricant is carried tothe motor parts. When the throttle, va1ve is in its open position, the passages 2 2, 22 are closed sovthat no more lubricant may flow ,to the motor parts until the handle is again returned to ther position shown in Fig. 2, andthereafter again shoved downwardly to the position shown in Fig. 1. Whenthe lubricant in the reservoirs attains a level below the mouths of the passages 22, it has been found that lubricant still flows to the groove I and thence to the motor, due to the emulsicationfof the lubricant caused by-pressure iiuid leakingv lpast the valver I3 to the reservoirs, and `the vibration of the drill during operation. Also, in Ytools of the type disclosed, the same are frequently laid down on their sides during the drill ing operation so thatthe lubricant may flowby gravity into the groove I5 even when the supply 'of lubricant in lthe reservoirs is low, thereby insuring frequent lubrication of the motor. It will also be evident that when the drill is in its inoperative position and islaid in any manner on the ground, no lubricant will ilovv from the chambers 2|, 2I more than that necessary to fill the groove I5, and as a result waste of lubricant is eliminated. These and other uses and advantages' of the improved lubricatcr will be clearly ti :e,-it will be understoodthat this form is shown for purposes of illustration, and that the invention maybe modied'and embodied `in various other forms Without departing from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:-

l. In a tool of the character described, a motor including a cylinder and a piston reciprocable therein, a rear head block for said cylinder, a tool supporting member slidably guided on said rearhead block," said head blockl having parallel chambers, a plunger valve reciprocable in one of said chambers and engageable with said tool supporting member and actuated by the latter for vcontrolling the supply of motive fluid to said cylinder, said valve having a recess for receiving lubricant and for conducting motive fluid and Said head block having therein a passage controlled by,said valve for supplying motive iiuid to said cylinder, said other chamber constituting a lubricant reservoir, and passage means controlled by said valve for supplying lubricant from said reservoir for delivery to the motiveluid supplyv passage, said' lubricant reservoircomrnunicating through said passage means with said plunger valve recesswhen saidvalveis in one positionandsaid plunger valve recess ycommunicating with said. motive nuid supply" passage when said plunger valve is. in another position.

2.. Ina tool of the character described, a motor including "a cylinderl anda piston reciprocable therein, a rear head block for said cylinder, a tool supporting member slidably guided on said lrear head block, said` head 4block having parallel chambers, a plunger valve. reciprocable in one Aof said chambers and engageable with said Vtool supporting member and actuated by 4thel latter forcontrolling a supply fof'vinotive fluid to said cylinder, said valve havingarecess for receiving lubricant and'for conductingmotive fluid and said head blockhaving va passage controlled by said valve for supplying motive fluid to said cylinder, saidother chamber 'constituting a lubricant reservoir, andvpass'lage means controlled by said valve for supplying lubricant from said reservoir fordelivery to .the motive fluid supply passage, said lubricant reservoircommunicating throughrsaidpassage means with said plunger valverecess when said valve is in one Yposition and said plunger lvalve recess communicating with said motive iiuid supply passagewhen said plunger valve is in another position, said passage means including a lubricantdischargeupassage connecting the upperend ofcsaid reservoir with said plunger valve bore and with which said valve recess is communicable.. v

3. In a tool of the character described,- a motor -including-a'cylinder and a piston reciprocable therein, a rear head block forsaid cylinder having a cylindrical rearward portion, 'a tool supporting handle having a sleeve-like portion slidvably guided onsaid cylindrical portion of said rear head block, said head block having an axial bore and parallel lubricant chambers arranged parallel to and substantially 'coeXtensive With said axial bore and communicating at their upper endsth'rough lubricant discharge passages with ysaid axial bore,y a nllerpassage communicating withsaid parallel chambers whereby the latter may be lled Witha lubricant, a plunger valve slidably guided in said axial bore and engaging said` handle and actuated'by the latter` for controlling afsupply ofinotive fluid `to vsaid cylinder, said valve also Vcontrolling said lubricant dischargeipassages, a passage controlled by said vvalve `for supplying: motive iiuidtosaid cylinder,

said valve having a groove through which fluid valve receiving lubricant from said discharge ows to said motor cylinder when said lubricant passages when said valve is in closed position and discharge passages are closed by said valve, said discharging said lubricant into said motive lfluid groove communicating with said lubricant dissupply passage when'said Valve is open. `5 charge passages when said motive fluid supply i n passage is closedby said valve, the groove in said j JOHN L. REILLY. 

